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Source: https://mainichi.jp/english/articles...0m/0li/020000c
Bird flu suspected in mass deaths of sea animals in eastern Hokkaido
May 8, 2025 (Mainichi Japan)
NEMURO, Hokkaido -- The highly pathogenic avian influenza, known for its high mortality rate, is suspected as the cause of mass deaths and abnormal behavior of sea animals in eastern Hokkaido.
Since mid-March, the eastern coast of Hokkaido has seen a rise in seabirds and marine mammals believed to have been infected with bird flu. In the city of Nemuro, an independent survey by volunteers had confirmed the carcasses of 614 seabirds as of May 4, along with seals and sea otters. Although infection was confirmed in a dead sea otter found in the neighboring town of Hamanaka, many surrounding municipalities lack sufficient investigative frameworks, suggesting the reported cases are just the tip of the iceberg.
Masahiro Toyama, a curator at Nemuro's Museum of History and Nature, and rangers from the Wild Bird Society of Japan noticed abnormalities among seabirds and are continuing a survey voluntarily. The team collected the carcass of a crested auklet from Habomai Fishing Port in Nemuro on March 14 and sent a sample to the Institute for Raptor Biomedicine Japan in the city of Kushiro, where a PCR test confirmed infection with the bird flu A virus. That same day, additional carcasses of a red-necked grebe and a pelagic cormorant were also found at Nemuro's Hanasaki Port...
Bird flu suspected in mass deaths of sea animals in eastern Hokkaido
May 8, 2025 (Mainichi Japan)
NEMURO, Hokkaido -- The highly pathogenic avian influenza, known for its high mortality rate, is suspected as the cause of mass deaths and abnormal behavior of sea animals in eastern Hokkaido.
Since mid-March, the eastern coast of Hokkaido has seen a rise in seabirds and marine mammals believed to have been infected with bird flu. In the city of Nemuro, an independent survey by volunteers had confirmed the carcasses of 614 seabirds as of May 4, along with seals and sea otters. Although infection was confirmed in a dead sea otter found in the neighboring town of Hamanaka, many surrounding municipalities lack sufficient investigative frameworks, suggesting the reported cases are just the tip of the iceberg.
Masahiro Toyama, a curator at Nemuro's Museum of History and Nature, and rangers from the Wild Bird Society of Japan noticed abnormalities among seabirds and are continuing a survey voluntarily. The team collected the carcass of a crested auklet from Habomai Fishing Port in Nemuro on March 14 and sent a sample to the Institute for Raptor Biomedicine Japan in the city of Kushiro, where a PCR test confirmed infection with the bird flu A virus. That same day, additional carcasses of a red-necked grebe and a pelagic cormorant were also found at Nemuro's Hanasaki Port...